| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.flink.test.operators; |
| |
| import org.apache.flink.api.common.functions.RichFilterFunction; |
| import org.apache.flink.api.java.DataSet; |
| import org.apache.flink.api.java.ExecutionEnvironment; |
| import org.apache.flink.api.java.tuple.Tuple3; |
| import org.apache.flink.test.operators.util.CollectionDataSets; |
| import org.apache.flink.test.util.MultipleProgramsTestBase; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| import java.util.List; |
| |
| /** Integration tests for {@link DataSet#union}. */ |
| @RunWith(Parameterized.class) |
| public class UnionITCase extends MultipleProgramsTestBase { |
| |
| private static final String FULL_TUPLE_3_STRING = |
| "1,1,Hi\n" |
| + "2,2,Hello\n" |
| + "3,2,Hello world\n" |
| + "4,3,Hello world, how are you?\n" |
| + "5,3,I am fine.\n" |
| + "6,3,Luke Skywalker\n" |
| + "7,4,Comment#1\n" |
| + "8,4,Comment#2\n" |
| + "9,4,Comment#3\n" |
| + "10,4,Comment#4\n" |
| + "11,5,Comment#5\n" |
| + "12,5,Comment#6\n" |
| + "13,5,Comment#7\n" |
| + "14,5,Comment#8\n" |
| + "15,5,Comment#9\n" |
| + "16,6,Comment#10\n" |
| + "17,6,Comment#11\n" |
| + "18,6,Comment#12\n" |
| + "19,6,Comment#13\n" |
| + "20,6,Comment#14\n" |
| + "21,6,Comment#15\n"; |
| |
| public UnionITCase(TestExecutionMode mode) { |
| super(mode); |
| } |
| |
| @Test |
| public void testUnion2IdenticalDataSets() throws Exception { |
| /* |
| * Union of 2 Same Data Sets |
| */ |
| final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment(); |
| |
| DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env); |
| DataSet<Tuple3<Integer, Long, String>> unionDs = |
| ds.union(CollectionDataSets.get3TupleDataSet(env)); |
| |
| List<Tuple3<Integer, Long, String>> result = unionDs.collect(); |
| |
| String expected = FULL_TUPLE_3_STRING + FULL_TUPLE_3_STRING; |
| |
| compareResultAsTuples(result, expected); |
| } |
| |
| @Test |
| public void testUnion5IdenticalDataSets() throws Exception { |
| /* |
| * Union of 5 same Data Sets, with multiple unions |
| */ |
| |
| final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment(); |
| |
| DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env); |
| DataSet<Tuple3<Integer, Long, String>> unionDs = |
| ds.union(CollectionDataSets.get3TupleDataSet(env)) |
| .union(CollectionDataSets.get3TupleDataSet(env)) |
| .union(CollectionDataSets.get3TupleDataSet(env)) |
| .union(CollectionDataSets.get3TupleDataSet(env)); |
| |
| List<Tuple3<Integer, Long, String>> result = unionDs.collect(); |
| |
| String expected = |
| FULL_TUPLE_3_STRING |
| + FULL_TUPLE_3_STRING |
| + FULL_TUPLE_3_STRING |
| + FULL_TUPLE_3_STRING |
| + FULL_TUPLE_3_STRING; |
| |
| compareResultAsTuples(result, expected); |
| } |
| |
| @Test |
| public void testUnionWithEmptyDataSet() throws Exception { |
| /* |
| * Test on union with empty dataset |
| */ |
| final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment(); |
| |
| // Don't know how to make an empty result in an other way than filtering it |
| DataSet<Tuple3<Integer, Long, String>> empty = |
| CollectionDataSets.get3TupleDataSet(env).filter(new RichFilter1()); |
| |
| DataSet<Tuple3<Integer, Long, String>> unionDs = |
| CollectionDataSets.get3TupleDataSet(env).union(empty); |
| |
| List<Tuple3<Integer, Long, String>> result = unionDs.collect(); |
| |
| String expected = FULL_TUPLE_3_STRING; |
| |
| compareResultAsTuples(result, expected); |
| } |
| |
| private static class RichFilter1 extends RichFilterFunction<Tuple3<Integer, Long, String>> { |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public boolean filter(Tuple3<Integer, Long, String> value) throws Exception { |
| return false; |
| } |
| } |
| } |